Immune System Flashcards
How do pathogens enter our body?
air, water, food, wounds/cuts
What are antigens
any substance, like a macromolecule, that initiates a response from the immune system.
What’s another name for WBC (White Blood Cells)
Leukocytes
Where do WBCs (White Blood Cells) originate from?
Bone Marrow
What is the name of blood stem cells?
Hematopoietic stem cells
Where are leukocytes found?
Found circulating in blood plasma, lymph system, tissue
Leukocytes can move_______ the flow of blood/lymph
against
What process allows Leukocytes to move against the flow of blood/lymph?
Diapedesis
What is diapedesis?
movement/squeezing of leukocytes through the tiny slits/crevices found through endothelial cells of the capillaries
What are the 3 types of Leukocytes?
- Granulocytes 2. Agranulocytes
- Megakaryocytes
Characteristics of granulocytes
Cytoplasms with granules and lobe-shaped nuclei
3 types of granulocytes
neutrophils, eosinophils, basophils
What is the role of a neutrophil?
Destroying pathogens/are phagocytic
What is the role of an Eosinophil?
dealing/killing parasites & involved with allergic reactions
What anti-clotting agent do Basophil’s contain?
Heparin
What chemical does a Basophil have inside its granules?
Histamine